To efficiently fix a plate material to a building frame and prevent water immersion from outside.

A plurality of nails 2 and two wires (connecting means) 11 aligning the orientations of the plurality of nails 2 and connecting body parts 6 of the nails 2 parallelly are provided. Sealing materials 10 are adhered to the surfaces of head part lower faces 4 to neck parts 5 of the nails 2. Due to this, when the nails 2 are knocked into a furring material, since resistance to the knocking is small, the knocking is easily performed. Moreover, due to the knocking of the nails 2, the sealing materials 10 are pushed out between the head part lower faces 4 of the nails 2 and the furring material, and appropriate amount of the sealing materials 10 is sandwiched.